KR100852643B1 - Plywood joint structure for floor of railway vehicle - Google Patents

Abstract

A plywood joint structure for a floor of a railway vehicle is provided to maintain a coupling state of plywood with sufficient rigidity by fastening the plywood, an iron core, and an iron material together with screws. A plywood joint structure for a floor(3) of a railway vehicle(2) includes a base and plywood(20). The base is formed by filling sound insulation material between an extruded aluminum panel and rubber. The plywood is attached to the upper part of the base. An iron core is inserted into a joint part(21) of ends of the plywood. An iron material is attached to the lower surface of the joint part. The iron core and the iron material are fastened by screws inserted from the upper surface of the plywood.

Description

PLYWOOD JOINT STRUCTURE FOR FLOOR OF RAILWAY VEHICLE}

1A is a longitudinal sectional view showing the inside of a railroad car of the present invention, and FIG. 1B is a plan view showing the bottom of the railroad car of the present invention.

FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1 and showing a state in which an iron core is inserted into a plywood. FIG.

FIG. 3 is a cross-sectional view taken along the line B-B in FIG. 1 and illustrating the overlapping seams of the plywood. FIG.

* Description of the symbols for the main parts of the drawings *

1: floor plywood joint structure for railway vehicle 10: base

11: aluminum extrusion material 12: rubber

13: sound insulation material 20: plywood

21: seam 22: the upper surface

23: floor covering 24: lower surface

25 screw 30 iron core

40 steel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor plywood joint structure, and more particularly, to a plywood joint structure in which two plywoods applied to floor structures for various railway vehicles such as electric cars, cars, passenger cars, and wagons overlap.

The floor plywood joint of the conventional railroad car was constructed by screwing the plywood and the steel together from the top of the plywood to the bottom after connecting the plywood in the form of overlapping or butt joints. However, these methods have a problem in that the plywood joints are weak and easily shifted due to the weight of the equipment applied to the floor plywood, passenger load, and vehicle vibration, so that the plywood rises and the floor is rebuilt.

The present invention has been made to solve the above problems of the prior art, it is possible to maintain the fastening state with sufficient rigidity in installing a plywood which is a floor support material for a railroad car to provide a floor plywood joint structure for a railroad car that does not deform the joint portion For the purpose of

In order to solve the above problems, the present invention, as a floor plywood joint structure for railway vehicles, comprising a base made of a sound insulating material is filled between the aluminum extrusion material and the rubber laminate, and a plywood fixed to the upper side of the base, An iron core is inserted into the middle of the joint portion where the end portions are in contact with each other, and the bottom surface is made of iron, and the bottom plywood joint structure for railroad cars, in which the iron core and the iron are fixed at the same time through a screw constructed from an upper surface of the plywood, is characterized in that the iron core is inserted.

In addition, the iron core of the present invention is formed in a plate shape, characterized in that the same insertion through both plywood around the joint.

In addition, the joint portion of the present invention is characterized in that the butt structure in which the ends are butted.

In addition, the joint portion of the present invention is characterized in that the overlapping structure having an uneven shape step and overlapping up and down.

In addition, the overlapping structure of the present invention is characterized in that the iron core is inserted between the faces of the plywood overlapping up and down.

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

However, the following examples are merely exemplary, various modifications are possible within the technical spirit of the present invention, and the present invention is not limited.

Figure 1a is a longitudinal cross-sectional view showing the interior of the railway vehicle of the present invention, Figure 1b is a plan view showing the bottom of the railway vehicle of the present invention, Figure 2 is a cross-sectional view along the line AA of Figure 1, the iron core is inserted into the plywood 3 is a cross-sectional view taken along the line BB of FIG. 1, showing the overlapping seams of the plywood.

As shown in Figs. 1 to 3, the floor plywood joint structure 1 for railroad cars of the present invention includes a base 10 that forms the bottom surface of the floor 3 of the railroad car 2, and an upper side of the base 10. An iron core 30 is inserted in the middle of the plywood 20 fixed to the wall and the joint portion 21 of the plywood 20, and the plate-shaped steel 40 is padded on the lower surface thereof, and then the screw 50 is plywood. Constructed from the upper portion of the (20), the plywood 20, the iron core 30 and the steel material 40 in order to pass through at the same time is configured to be fixed.

The base 10 is laminated to support the plywood 20 forming the bottom of the railroad car from the lower side, and the aluminum extrusion material 11 and the rubber 12 are laminated in a block shape from the lower side, and the sound insulating material in the spaces on both the left and right sides. (13) is charged. As the sound insulating material 13, glass wool (glass fiber), which is a non-combustible internal heat insulating material, is used as a soundproofing, soundproofing, sound absorbing, and heat insulating material by cushioning sound vibrations from an electric vehicle.

The plywood 20 is a plate having a predetermined thickness made by pressing wood, and is attached while covering the base 10 to form a flat bottom. The joint 21 between the plates is filled with a sealing material such as a sealant, and the upper surface 22 is covered with, for example, a floor covering 23 resistant to fire.

In addition, in the case of the butt joint structure in which end portions of the plywood 20 are joined together as shown in FIG. 2, for the purpose of preventing deformation of the vicinity of the joint portion 21 due to external force or vibration applied to the plywood 20. In the intermediate position of the joint portion 21, the plate-like iron core 30 is fitted to both plywood 20 by the same amount, and the plate-shaped iron 40 is attached to the lower surface 24 of the plywood 20 by the base 10. The padding portion 21 is padded around the joint 21 wider than the width of the block shape. In addition, even in an overlapped joint structure in which an end portion of the plywood 20 has an uneven step at the end of the plywood 20, and the steps overlap each other, the iron core 30 is fitted to the overlapping surface, and the lower surface 24 is the aforementioned. The iron material 40 is formed similarly to the butt joint case.

Therefore, as shown in FIG. 2, the butt joint structure rotates the screw 25 from the upper part 22 of the plywood 20 so that the iron core 30 and the steel material 40 can be penetrated and fixed in turn, thereby allowing the iron core 30 to be fixed. And the joint of the both plywood 20 through the steel 40 is made stubbornly. In addition, even in the case of the overlapping joint structure, the iron core 30 is fitted into a portion where both the plywoods 20 overlap with each other, and the iron core 30 and the iron material 40 are fixed through the screw 25 in order. Also in this case, the rigid joint of the plywood 20 is executed.

In addition, as needed, the screw 25 can be constructed only in the upper surface 22 side of the one side plywood 20, and can also be installed in both the plywood 20.

Therefore, as shown in FIGS. 2 and 3, when the iron core 30 is inserted in the middle of the plywood 20 before the plywood 20 is joined to each other in the form of butt joints or overlapping joints, a wide iron 40 is padded on the 24. By constructing the screw 25 so that the iron core 30 and the steel material 40 are simultaneously fixed on the plywood 20, the fastening state can be maintained with sufficient rigidity.

The present invention can provide a floor plywood joint structure for railroad cars that can maintain the fastening state with sufficient rigidity in installing the plywood which is the floor support material for railroad cars so that the joints are not deformed.

Claims (5)

As a floor plywood joint structure for railway vehicles, A base in which a sound insulating material is filled between the aluminum extruded material and the rubber laminate, It is provided with a plywood that is fixed to the upper side of the base, The iron core is inserted into the middle of the joint portion where the ends of the plywood contact each other, the bottom of the joint is iron plated, and the iron core and the iron is fixed at the same time through the screw installed from the upper surface of the plywood Plywood joint structure. The bottom plywood joint structure of claim 1, wherein the iron core is formed in a plate shape and is inserted in the same manner through the plywood around the joint. The floor plywood joint structure according to any one of claims 1 to 3, wherein the joint portion is a butt structure in which end portions are abutted. The floor plywood joint structure according to claim 1 or 2, wherein the joint portion has an uneven structure and has an overlapping structure overlapping up and down. 5. The floor plywood joint structure according to claim 4, wherein an iron core is inserted between surfaces of the plywood overlapping vertically in the overlapping structure.

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